Regeneration of the Digestive Tube in the Holothurian Apostichopus japonicusafter Evisceration

Regeneration of the Digestive Tube in the Holothurian Apostichopus japonicusafter Evisceration We performed a TEM study of regeneration of the intestine in the Far Eastern trepang, the holothurian Apostichopus japonicus, after evisceration. The following stages were distinguished in the restoration process of the digestive tube: the growth of connective tissue along the margin of the mesenterium, in the place of rupture; dedifferentiation of cells and their migration and proliferation; the rooting of the esophagus lining into the connective tissue anlage; and the transformation of esophagus cells into cells of the middle part of the intestine. The migration of epithelium into the area of regeneration takes place through a solid cellular layer, without breaking of the cell contacts. The mitotic activity was registered in all stages of restoration; the dividing cells were located chaotically, without the development of a blastema. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Regeneration of the Digestive Tube in the Holothurian Apostichopus japonicusafter Evisceration

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Publisher
Springer Journals
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1023/A:1016717502616
Publisher site
See Article on Publisher Site

Abstract

We performed a TEM study of regeneration of the intestine in the Far Eastern trepang, the holothurian Apostichopus japonicus, after evisceration. The following stages were distinguished in the restoration process of the digestive tube: the growth of connective tissue along the margin of the mesenterium, in the place of rupture; dedifferentiation of cells and their migration and proliferation; the rooting of the esophagus lining into the connective tissue anlage; and the transformation of esophagus cells into cells of the middle part of the intestine. The migration of epithelium into the area of regeneration takes place through a solid cellular layer, without breaking of the cell contacts. The mitotic activity was registered in all stages of restoration; the dividing cells were located chaotically, without the development of a blastema.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Oct 16, 2004

References

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